I'm seventeen this year, have an irregular period, and i only recently started logging, so i'm unsure of my cycle & stuff (sorry !!)

I have sex with my boyfriend often, we use a condom about 97 per cent of the time. When we don't, i take the emergency morning-after pill—i'm not on birth control. When we do, he pulls out half the time, and i'm not entirely sure if we're using the condom correctly. Sometimes he puts it on backwards but notices before unrolling, sometimes there's a small air bubble etc.

I've only taken a pregnancy test once, though we had been having sex for a while before and after, so i'm unsure if it's reliable.

Right now i may be having symptoms ? And my period is supposedly three days late. What should i do if anything ? Should i be worried ?

Sorry for rambling—please leave any advice if any !! Thank you x